tachistoscope noun. [ta'kɪstǝskǝʊp] L19.
[from Greek takhistos swiftest + -SCOPE.]
An instrument which presents objects to the eye for a fraction of a second, e.g. to determine the amount of detail that can be apprehended by a single act of attention.

■ tachisto'scopic adjective E20.

■ tachisto'scopically adverb E20.

[TahlilGaran] English Dictionary ▲